I don't think that the bleach manga is slower then any other manga series. It just seems that way because your only reading nineteen pages a week. Which in truth is a really really slow way to develop a storyline. If you can wait try not reading the manga for a month or two then comming back so you have a nice stock pile to look up.

I personnally like the direction the manga is going towards. Curious to hear more about the vizards themselves. I.E. what are their origins and what role do they play between soul society and the hollow world.